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Optical bistability via quantum interference from incoherent pumping and spontaneous emission
, Article Journal of Luminescence ; Volume 131, Issue 11 , 2011 , Pages 2395-2399 ; 00222313 (ISSN) ; Asadpour, S. H ; Sadighi Bonabi, R ; Sharif University of Technology
Abstract
We theoretically investigate the optical bistability (OB) in a V-type three-level atomic system confined in a unidirectional ring cavity via incoherent pumping field. It is shown that the threshold of optical bistability can be controlled by the rate of an incoherent pumping field and by interference mechanism arising from the spontaneous emission and incoherent pumping field. We demonstrate that the optical bistability converts to optical multi-stability (OM) by the quantum interference mechanism
Investigating the impact of correlated white noises on the bistability behavior in an optical three-level bistable system
, Article Journal of the Optical Society of America B: Optical Physics ; Volume 32, Issue 1 , 2015 , Pages 76-82 ; 07403224 (ISSN) ; Sadighi Bonabi, R ; Sharif University of Technology
Abstract
The effect of correlated white noises on the optical bistability behavior of three-level atomic systems is theoretically investigated. Noise-induced bistability is demonstrated in an atomic optical bistable system consisting of three-level atoms in Ë-type configurations confined in an optical ring cavity. The output field as a result of enhanced Kerr nonlinearity induced by atomic coherence in the electromagnetically induced transparency system is variable due to the noises in laser parameters and the cooperativity parameter. Therefore, noise is mainly responsible for such induced bistability in the system. It is found that with the cross-correlation noises, the hysteresis loop of optical...